get_security_posture

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the return content (security score, vulnerability trends, risk assessment) but doesn't cover critical aspects like whether this is a read-only operation, permission requirements, data freshness, rate limits, or error conditions. For a tool that likely accesses sensitive security data, this is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is perfectly concise with two sentences that each earn their place: the first states the action and scope, the second specifies the return values. There's no wasted language or redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (security posture assessment likely involves significant data processing), the absence of annotations and output schema means the description should do more. While it efficiently states purpose and return types, it lacks details about behavioral characteristics, data sources, or format of returned metrics that would help an agent use it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, and the schema description coverage is 100% (though trivial since there are no parameters). The description appropriately doesn't discuss parameters, focusing instead on what the tool returns. This meets the baseline expectation for a zero-parameter tool.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('Get') and resources ('overall security posture metrics for the organization'), and it distinguishes this from sibling tools that focus on specific issues, vulnerabilities, or scans rather than organization-wide metrics. However, it doesn't explicitly differentiate from 'get_summary_statistics' which might be a similar high-level reporting tool.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'get_summary_statistics' or 'search_vulnerabilities'. It doesn't mention prerequisites, timing considerations, or exclusions, leaving the agent to infer usage from the purpose alone.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.